Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Morgan County, Tennessee
EPA puts Morgan County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
6.5%
26.8 pts below TN
- Morgan
- 6.5%
- Tennessee
- 33.3%
31 tests, 2008 to 2017
Median result
1.7pCi/L
Below action level
- Morgan
- 1.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
31
78th of 80 by tests
- Morgan
- 31
- Davidson
- 5,592
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Tennessee
75 of 80
Lowest quarter
- Morgan
- 6.5%
- Jefferson
- 56.8%
By share, of 80 with 30+ tests
Read a result for Morgan County
Starts at Morgan County's median, 1.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.7 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Morgan County's median reported result, 2008 to 2017.
The data
Morgan County, At a glance
Morgan County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 99% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Morgan County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2022 | 0.0% |
| 2023 | 100.0% |
2023: 100.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 1 test was reported to CDC for Morgan County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Morgan County, Compared
Morgan County radon figures, compared
Calculated by Radon411Morgan County reports fewer high tests than Tennessee overall. 6.5% of its 31 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 26.8 points below the 33.3% pooled from 95 Tennessee counties.
The newest figure, in 2023, counts only 1 test (100.0% at or above 4 pCi/L), too few to compare, so this reading uses the 31-test figure.
Ordered from highest share down, it comes 75th of 80 Tennessee counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Morgan County sits 29.2 points below it.
Next door, the shares run from 2.6% in Scott County to 48.3% in Anderson County, with Scott County below Morgan County. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 6.5% share point the same way here.
Half the tests came in under 1.7 pCi/L and half over it; the single highest reached 4.5 pCi/L. The rest split 58.1% under 2 pCi/L and 35.5% from 2 to 4 (Tennessee: 42.4% and 24.3%).
The busiest year on file was 2022, with 12 tests reported; the quietest, 2023, had 1.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Morgan County, Geology
The ground under Morgan County
PredictedMost of the ground under Morgan County is one class on USGS's geologic map: 98.7% of its land is low radon potential, with 1.3% high. 98.7% of it lies in the area the map calls Appalachian Plateau, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Appalachian Plateau | Sandstone and shale. | Low | 8 | 98.7% |
| Ridge and Valley | Paleozoic sandstone and cherty dolostone. | High | 14 | 1.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Morgan County beside the ground around it
Tennessee as a whole has more high-potential ground than Morgan County: 47.2% of its land, against 1.3% here. Of the 5 counties that border it, 2 have more high-potential ground, Roane County the most at 97.3%.
The map rates the ground, not the air in any home.
Local help
Morgan County, Local resources
Radon testing and mitigation in Morgan County
- Tennessee Radon ProgramTennessee Radon Program, run by Department of Environment & Conservation, offers free or discounted test kits, and answers questions about testing and mitigation in Tennessee.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Tennessee Radon Program provides free radon test kits and information assistance to residents, while also providing training opportunities to radon professionals across the state.
- Compare kits
- Professionals in Tennessee1 professional is listed in Tennessee.
What Tennessee's program says
- Phone
- 1-800-232-1139
- TDEC.Radon@tn.gov
What it means
Morgan County, Questions
Questions about radon in Morgan County
Are radon levels high in Morgan County?
In 2023, 100.0% of the radon tests reported to CDC for Morgan County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 23.2 pCi/L. Of 80 Tennessee counties with 30 or more tests for the same period, 74 reported a higher share; pooled, the state comes to 33.3%.
Which counties border Morgan County?
Morgan County borders 5 counties: Scott County, Fentress County, Roane County, Cumberland County and Anderson County.
Products
Morgan County, Products
Testing a home in Morgan County
In Morgan County, 6.5% of 31 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 33.3% pooled across Tennessee. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Morgan County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorX-Sense
XR0B-SR battery digital radon monitor with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Morgan County, Bordering counties
Counties bordering Morgan County
Calculated by Radon411- Radon levels in Anderson CountyEPA zone 1
48.3%at or above 4 pCi/L
Median 3.8 pCi/L · 269 tests · 41.8 points above Morgan County
- Radon levels in Roane CountyEPA zone 1
33.7%at or above 4 pCi/L
Median 2.5 pCi/L · 258 tests · 27.2 points above Morgan County
- Radon levels in Fentress CountyEPA zone 2
9.1%at or above 4 pCi/L
Median 1.3 pCi/L · 33 tests · 2.6 points above Morgan County
- Radon levels in Cumberland CountyEPA zone 3
8.7%at or above 4 pCi/L
Median 1.3 pCi/L · 172 tests · 2.2 points above Morgan County
- Radon levels in Scott CountyEPA zone 3
2.6%at or above 4 pCi/L
Median 1.3 pCi/L · 39 tests · 3.9 points below Morgan County
Morgan County, Cities and towns
Cities and towns in Morgan County
Morgan County is growing: the Census Bureau puts it at 22,160 residents on July 1, 2025, up 5.3% from 21,051 in 2020. That works out to 42 people per square mile of land. Harriman, the largest place on its list (6,192 residents in all), extends beyond Morgan County, so no share of the total is worked out for it. Reported testing is thin here: 31 tests over 2008 to 2017, or 1.4 for every 1,000 residents (2025 estimate), where Tennessee as a whole comes to 4.2.
From Harriman to Oakdale, CDC publishes no figure by town: each reads Morgan County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Harrimanextends beyond Morgan County | 6,192 | +4.4% | Counted whole |
| Oliver Springsextends beyond Morgan County | 3,433 | +4.4% | Counted whole |
| Wartburg | 957 | +4.6% | 4.3% |
| Sunbright | 549 | +5.6% | 2.5% |
| Oakdale | 201 | +5.2% | 0.9% |
5 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Morgan County is counted whole, so it has no share.
Morgan County, Homes
Homes in Morgan County
Of Morgan County's 8,550 homes, 69% are detached houses, against 68% across Tennessee; 27% are mobile homes. Half of its homes were built before 1986, close to Tennessee's 1986: 18% date from before 1960 and 23% from 2000 or later. Owners live in 84% of the occupied homes (Tennessee: 67%), so for most households a test and a fix are their own to order.
| Homes | Morgan County | Tennessee |
|---|---|---|
| Housing units | 8,550 | 3,095,472 |
| Detached houses | 69% | 68% |
| In buildings of 5 or more | 2% | 14% |
| Mobile homes | 27% | 8% |
| Built before 1960 | 18% | 18% |
| Built since 2000 | 23% | 29% |
| Middle year built | 1986 | 1986 |
| Owner-occupied | 84% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.